482 lines
15 KiB
C++
482 lines
15 KiB
C++
/***************************************************************************
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**
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** Copyright (C) 2014 BlackBerry Limited. All rights reserved.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "pingpong.h"
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#include <QDebug>
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#include <QCoreApplication>
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PingPong::PingPong()
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{
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m_timer = new QTimer(this);
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connect(m_timer, &QTimer::timeout, this, &PingPong::update);
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}
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PingPong::~PingPong()
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{
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delete m_timer;
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delete m_serverInfo;
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delete socket;
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delete discoveryAgent;
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}
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void PingPong::startGame()
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{
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m_resultLeft = m_resultRight = 0;
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emit resultChanged();
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m_showDialog = false;
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emit showDialogChanged();
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//! [Start the game]
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m_timer->start(10);
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//! [Start the game]
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}
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void PingPong::update()
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{
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QByteArray size;
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// Server is only updating the coordinates
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//! [Updating coordinates]
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if (m_role == 1) {
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checkBoundaries();
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m_ballY += m_speedy;
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m_ballX += m_speedx;
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size.setNum(m_ballX);
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size.append(' ');
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QByteArray size1;
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size1.setNum(m_ballY);
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size.append(size1);
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size.append(' ');
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size1.setNum(m_leftBlockY);
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size.append(size1);
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size.append(" \n");
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socket->write(size.constData());
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emit ballChanged();
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}
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else if (m_role == 2) {
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size.setNum(m_rightBlockY);
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size.append(" \n");
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socket->write(size.constData());
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}
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//! [Updating coordinates]
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}
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void PingPong::updateBall(const float &bX, const float &bY)
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{
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m_ballX = bX;
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m_ballY = bY;
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}
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void PingPong::updateLeftBlock(const float &lY)
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{
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m_leftBlockY = lY;
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}
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void PingPong::updateRightBlock(const float &rY)
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{
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m_rightBlockY = rY;
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}
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void PingPong::checkBoundaries()
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{
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float ballWidth = 1.f / 27;
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float blockSize = 1.f / 27;
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float blockHeight = 1.f / 5;
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float ballCenterY = m_ballY + ballWidth / 2.;
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//! [Checking the boundaries]
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if (((m_ballX + ballWidth) > (1. - blockSize)) && (ballCenterY < (m_rightBlockY + blockHeight))
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&& (ballCenterY > m_rightBlockY)) {
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// right paddle collision
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// simulating paddle surface to be a quarter of a circle
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float paddlecenter = m_rightBlockY + blockHeight / 2.;
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float relpos = (ballCenterY - paddlecenter) / (blockHeight / 2.); // [-1 : 1]
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float surfaceangle = M_PI_4 * relpos;
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// calculation of surface normal
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float normalx = -cos(surfaceangle);
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float normaly = sin(surfaceangle);
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// calculation of surface tangent
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float tangentx = sin(surfaceangle);
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float tangenty = cos(surfaceangle);
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// calculation of tangentialspeed
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float tangentialspeed = tangentx * m_speedx + tangenty * m_speedy;
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// calculation of normal speed
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float normalspeed = normalx * m_speedx + normaly * m_speedy;
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// speed increase of 10%
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normalspeed *= 1.1f;
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if (normalspeed < 0) { // if we are coming from the left. To avoid double reflections
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m_speedx = tangentialspeed * tangentx - normalspeed * normalx;
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m_speedy = tangentialspeed * tangenty - normalspeed * normaly;
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}
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} else if ((m_ballX < blockSize) && (ballCenterY < (m_leftBlockY + blockHeight))
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&& (ballCenterY > m_leftBlockY)) {
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// left paddle collision
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// simulating paddle surface to be a quarter of a circle
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float paddlecenter = m_leftBlockY + blockHeight / 2.;
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float relpos = (ballCenterY - paddlecenter) / (blockHeight / 2.); // [-1 : 1]
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float surfaceangle = M_PI_4 * relpos;
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// calculation of surface normal
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float normalx = cos(surfaceangle);
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float normaly = sin(surfaceangle);
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// calculation of surface tangent
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float tangentx = -sin(surfaceangle);
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float tangenty = cos(surfaceangle);
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// calculation of tangentialspeed
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float tangentialspeed = tangentx * m_speedx + tangenty * m_speedy;
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// calculation of normal speed
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float normalspeed = normalx * m_speedx + normaly * m_speedy;
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// speed increase of 10%
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normalspeed *= 1.1f;
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if (normalspeed < 0) { // if we are coming from the left. To avoid double reflections
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m_speedx = tangentialspeed * tangentx - normalspeed * normalx;
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m_speedy = tangentialspeed * tangenty - normalspeed * normaly;
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}
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} else if (m_ballY < 0) {
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m_speedy = std::abs(m_speedy);
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} else if (m_ballY + ballWidth > 1.f) {
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m_speedy = -std::abs(m_speedy);
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}
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//! [Checking the boundaries]
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else if ((m_ballX + ballWidth) > 1.f) {
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m_resultLeft++;
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m_speedx = -0.002f;
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m_speedy = -0.002f;
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m_ballX = 0.5f;
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m_ballY = 0.9f;
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checkResult();
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QByteArray result;
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result.append("result ");
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QByteArray res;
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res.setNum(m_resultLeft);
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result.append(res);
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result.append(' ');
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res.setNum(m_resultRight);
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result.append(res);
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result.append(" \n");
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socket->write(result);
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qDebug() << result;
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emit resultChanged();
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} else if (m_ballX < 0) {
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m_resultRight++;
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m_speedx = 0.002f;
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m_speedy = -0.002f;
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m_ballX = 0.5f;
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m_ballY = 0.9f;
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checkResult();
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QByteArray result;
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result.append("result ");
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QByteArray res;
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res.setNum(m_resultLeft);
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result.append(res);
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result.append(' ');
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res.setNum(m_resultRight);
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result.append(res);
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result.append(" \n");
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socket->write(result);
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emit resultChanged();
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}
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}
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void PingPong::checkResult()
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{
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if (m_resultRight < 10 && m_resultLeft < 10)
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return;
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if (m_resultRight == 10 && m_role == 2) {
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setMessage("Game over. You win! Next game starts in 10s");
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}
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else if (m_resultRight == 10 && m_role == 1) {
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setMessage("Game over. You lose! Next game starts in 10s");
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}
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else if (m_resultLeft == 10 && m_role == 1) {
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setMessage("Game over. You win! Next game starts in 10s");
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}
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else if (m_resultLeft == 10 && m_role == 2) {
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setMessage("Game over. You lose! Next game starts in 10s");
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}
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m_timer->stop();
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QTimer::singleShot(10000, this, SLOT(startGame()));
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}
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void PingPong::startServer()
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{
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setMessage(QStringLiteral("Starting the server"));
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// make discoverable
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QBluetoothLocalDevice().setHostMode(QBluetoothLocalDevice::HostDiscoverable);
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//! [Starting the server]
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m_serverInfo = new QBluetoothServer(QBluetoothServiceInfo::RfcommProtocol, this);
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connect(m_serverInfo, &QBluetoothServer::newConnection,
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this, &PingPong::clientConnected);
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connect(m_serverInfo, &QBluetoothServer::errorOccurred, this, &PingPong::serverError);
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const QBluetoothUuid uuid(serviceUuid);
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m_serviceInfo = m_serverInfo->listen(uuid, QStringLiteral("PingPong server"));
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//! [Starting the server]
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setMessage(QStringLiteral("Server started, waiting for the client. You are the left player."));
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// m_role is set to 1 if it is a server
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m_role = 1;
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emit roleChanged();
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}
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void PingPong::startClient()
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{
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//! [Searching for the service]
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discoveryAgent = new QBluetoothServiceDiscoveryAgent(QBluetoothAddress());
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connect(discoveryAgent, &QBluetoothServiceDiscoveryAgent::serviceDiscovered,
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this, &PingPong::addService);
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connect(discoveryAgent, &QBluetoothServiceDiscoveryAgent::finished,
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this, &PingPong::done);
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connect(discoveryAgent, &QBluetoothServiceDiscoveryAgent::errorOccurred, this,
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&PingPong::serviceScanError);
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#ifdef Q_OS_ANDROID //see QTBUG-61392
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if (QNativeInterface::QAndroidApplication::sdkVersion() >= 23)
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discoveryAgent->setUuidFilter(QBluetoothUuid(androidUuid));
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else
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discoveryAgent->setUuidFilter(QBluetoothUuid(serviceUuid));
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#else
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discoveryAgent->setUuidFilter(QBluetoothUuid(serviceUuid));
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#endif
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discoveryAgent->start(QBluetoothServiceDiscoveryAgent::FullDiscovery);
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//! [Searching for the service]
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setMessage(QStringLiteral("Starting server discovery. You are the right player"));
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// m_role is set to 2 if it is a client
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m_role = 2;
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emit roleChanged();
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}
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void PingPong::clientConnected()
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{
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//! [Initiating server socket]
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if (!m_serverInfo->hasPendingConnections()) {
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setMessage("FAIL: expected pending server connection");
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return;
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}
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socket = m_serverInfo->nextPendingConnection();
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if (!socket)
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return;
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socket->setParent(this);
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connect(socket, &QBluetoothSocket::readyRead,
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this, &PingPong::readSocket);
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connect(socket, &QBluetoothSocket::disconnected,
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this, &PingPong::clientDisconnected);
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connect(socket, &QBluetoothSocket::errorOccurred, this, &PingPong::socketError);
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//! [Initiating server socket]
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setMessage(QStringLiteral("Client connected. Get ready!"));
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QTimer::singleShot(3000, this, SLOT(startGame()));
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}
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void PingPong::clientDisconnected()
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{
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setMessage(QStringLiteral("Client disconnected"));
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m_timer->stop();
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}
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void PingPong::socketError(QBluetoothSocket::SocketError error)
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{
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Q_UNUSED(error);
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m_timer->stop();
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}
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void PingPong::serverError(QBluetoothServer::Error error)
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{
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Q_UNUSED(error);
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m_timer->stop();
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}
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void PingPong::done()
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{
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qDebug() << "Service scan done";
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if (!m_serviceFound)
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setMessage("PingPong service not found");
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}
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void PingPong::addService(const QBluetoothServiceInfo &service)
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{
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setMessage("Service found. Setting parameters...");
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//! [Connecting the socket]
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socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
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socket->connectToService(service);
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connect(socket, &QBluetoothSocket::readyRead, this, &PingPong::readSocket);
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connect(socket, &QBluetoothSocket::connected, this, &PingPong::serverConnected);
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connect(socket, &QBluetoothSocket::disconnected, this, &PingPong::serverDisconnected);
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//! [Connecting the socket]
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m_serviceFound = true;
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}
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void PingPong::serviceScanError(QBluetoothServiceDiscoveryAgent::Error error)
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{
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setMessage(QStringLiteral("Scanning error") + QVariant::fromValue(error).toString());
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}
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bool PingPong::showDialog() const
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{
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return m_showDialog;
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}
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QString PingPong::message() const
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{
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return m_message;
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}
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void PingPong::serverConnected()
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{
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setMessage("Server Connected. Get ready!");
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QTimer::singleShot(3000, this, SLOT(startGame()));
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}
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void PingPong::serverDisconnected()
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{
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setMessage("Server Disconnected");
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m_timer->stop();
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}
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void PingPong::readSocket()
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{
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if (!socket)
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return;
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const char sep = ' ';
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QByteArray line;
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while (socket->canReadLine()) {
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line = socket->readLine();
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//qDebug() << QString::fromUtf8(line.constData(), line.length());
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if (line.contains("result")) {
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QList<QByteArray> result = line.split(sep);
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if (result.size() > 2) {
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QByteArray leftSide = result.at(1);
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QByteArray rightSide = result.at(2);
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m_resultLeft = leftSide.toInt();
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m_resultRight = rightSide.toInt();
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emit resultChanged();
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checkResult();
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}
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}
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}
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if (m_role == 1) {
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QList<QByteArray> boardSize = line.split(sep);
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if (boardSize.size() > 1) {
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QByteArray rightBlockY = boardSize.at(0);
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m_rightBlockY = rightBlockY.toFloat();
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emit rightBlockChanged();
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}
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} else if (m_role == 2) {
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QList<QByteArray> boardSize = line.split(sep);
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if (boardSize.size() > 2) {
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QByteArray ballX = boardSize.at(0);
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QByteArray ballY = boardSize.at(1);
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QByteArray leftBlockY = boardSize.at(2);
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m_ballX = ballX.toFloat();
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m_ballY = ballY.toFloat();
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m_leftBlockY = leftBlockY.toFloat();
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emit leftBlockChanged();
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emit ballChanged();
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}
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}
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}
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void PingPong::setMessage(const QString &message)
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{
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m_showDialog = true;
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m_message = message;
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emit showDialogChanged();
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}
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int PingPong::role() const
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{
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return m_role;
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}
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int PingPong::leftResult() const
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{
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return m_resultLeft;
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}
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int PingPong::rightResult() const
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{
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return m_resultRight;
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}
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float PingPong::ballX() const
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{
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return m_ballX;
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}
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float PingPong::ballY() const
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{
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return m_ballY;
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}
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float PingPong::leftBlockY() const
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{
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return m_leftBlockY;
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}
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float PingPong::rightBlockY() const
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{
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return m_rightBlockY;
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}
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